252 OSCILLATORE^. 



12. OSCILLATORIA MUSCOEUM Aff. 



Plate LXXII. Fig. 12. 



Char. Stratum da7'k (Bruginou& greeny shortly radiating, creep- 

 ing over mosses. Filaments thickish, pale blue green. 

 Stria3 distant. 



O. muscorum Ag. Syst. p. 375.; Harv. Hook. Br. Flor. 



365.; Mamial, p. 164. 

 Hab. On Hypnum ruscifolium in rapid streams : Captain 



Carmichael. 



" Stratum three or four inches in extent, closely inter- 

 Avoven with the branches and leayes of mosses, of a bluish 

 green colour, and slightly lubricous. Filaments a line or two 

 in length, variously curved, and radiating. Striaj at the 

 distance of a diameter from each other." — Carm. MS. Fila- 

 ments brittle, about equal in diameter to those of O. turfosa, 

 and when examined in the dried state, usually found to be 

 much broken up, with the strire all but invisible. 



b. 'EWscmQXiis Jlexuous, coriaceous. 

 13. OSCILLATORIA CORIUM Ag. 



Char. " Stratum thick, siibcoriaceous, opaque, dull broivnish, 

 streaked tvith pale green. Filaments yellowish, slejidcr. 

 Striaj indistinct, dista^it.''^ — Harv. 

 O. corium Grev. Flor. Edin., p. 303. ; Harv. Hook. Br. Fl. 



p. 377.; Harv. Manual, p. 166. 

 Hab. On the rocky bottoms of aliDine rivulets. 



" Stratum thick, tough, dull brownish ; occasionally 

 streaked with pale green, which in some varieties is the pre- 

 vailing colour, slightly glossy Avhen dry; filaments slender. 

 In some situations it radiates in fascicles from its whole upper 

 surface ; in otliers, it is found ahnost denuded of radii, and 

 forming a compact leathery stratum." — Harv. 



